title: An expeditious Nazarov cyclization strategy toward the hydroazulene core of guanacastepene A.
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis*; D002384:Catalysis; D003500:Cyclization; D004224:Diterpenes / Q000138:chemical synthesis*; D007202:Indicators and Reagents; D007659:Ketones / Q000737:chemistry; D015394:Molecular Structure
chemical_list: D000900:Anti-Bacterial Agents; D004224:Diterpenes; D007202:Indicators and Reagents; D007659:Ketones; C409194:guanacastepene